copy some pkgs for kinflate

pkg/kinflate/apps/apps_suite_test.go

@@ -0,0 +1,49 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package apps_test
+
+import (
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/ginkgo/config"
+	. "github.com/onsi/ginkgo/types"
+	. "github.com/onsi/gomega"
+
+	"fmt"
+	"testing"
+)
+
+func TestApps(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecsWithDefaultAndCustomReporters(t, "Apps Suite", []Reporter{newlineReporter{}})
+}
+
+// Print a newline after the default newlineReporter due to issue
+// https://github.com/jstemmer/go-junit-report/issues/31
+type newlineReporter struct{}
+
+func (newlineReporter) SpecSuiteWillBegin(config GinkgoConfigType, summary *SuiteSummary) {}
+
+func (newlineReporter) BeforeSuiteDidRun(setupSummary *SetupSummary) {}
+
+func (newlineReporter) AfterSuiteDidRun(setupSummary *SetupSummary) {}
+
+func (newlineReporter) SpecWillRun(specSummary *SpecSummary) {}
+
+func (newlineReporter) SpecDidComplete(specSummary *SpecSummary) {}
+
+// SpecSuiteDidEnd Prints a newline between "35 Passed | 0 Failed | 0 Pending | 0 Skipped" and "--- PASS:"
+func (newlineReporter) SpecSuiteDidEnd(summary *SuiteSummary) { fmt.Printf("\n") }

pkg/kinflate/apps/kind_visitor.go

@@ -0,0 +1,95 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package apps
+
+import (
+	"fmt"
+
+	"k8s.io/apimachinery/pkg/runtime/schema"
+)
+
+// KindVisitor is used with GroupKindElement to call a particular function depending on the
+// Kind of a schema.GroupKind
+type KindVisitor interface {
+	VisitDaemonSet(kind GroupKindElement)
+	VisitDeployment(kind GroupKindElement)
+	VisitJob(kind GroupKindElement)
+	VisitPod(kind GroupKindElement)
+	VisitReplicaSet(kind GroupKindElement)
+	VisitReplicationController(kind GroupKindElement)
+	VisitStatefulSet(kind GroupKindElement)
+	VisitCronJob(kind GroupKindElement)
+}
+
+// GroupKindElement defines a Kubernetes API group elem
+type GroupKindElement struct {
+	schema.GroupKind
+	// If true, ignore the error when the kind is not a workload type.
+	IgnoreNonWorkloadError bool
+}
+
+// Accept calls the Visit method on visitor that corresponds to elem's Kind
+func (elem GroupKindElement) Accept(visitor KindVisitor) error {
+	switch {
+	case elem.GroupMatch("apps", "extensions") && elem.Kind == "DaemonSet":
+		visitor.VisitDaemonSet(elem)
+	case elem.GroupMatch("apps", "extensions") && elem.Kind == "Deployment":
+		visitor.VisitDeployment(elem)
+	case elem.GroupMatch("batch") && elem.Kind == "Job":
+		visitor.VisitJob(elem)
+	case elem.GroupMatch("", "core") && elem.Kind == "Pod":
+		visitor.VisitPod(elem)
+	case elem.GroupMatch("apps", "extensions") && elem.Kind == "ReplicaSet":
+		visitor.VisitReplicaSet(elem)
+	case elem.GroupMatch("", "core") && elem.Kind == "ReplicationController":
+		visitor.VisitReplicationController(elem)
+	case elem.GroupMatch("apps") && elem.Kind == "StatefulSet":
+		visitor.VisitStatefulSet(elem)
+	case elem.GroupMatch("batch") && elem.Kind == "CronJob":
+		visitor.VisitCronJob(elem)
+	default:
+		if !elem.IgnoreNonWorkloadError {
+			return fmt.Errorf("no visitor method exists for %v", elem)
+		}
+	}
+	return nil
+}
+
+// GroupMatch returns true if and only if elem's group matches one
+// of the group arguments
+func (elem GroupKindElement) GroupMatch(groups ...string) bool {
+	for _, g := range groups {
+		if elem.Group == g {
+			return true
+		}
+	}
+	return false
+}
+
+// NoOpKindVisitor implements KindVisitor with no-op functions.
+type NoOpKindVisitor struct{}
+
+var _ KindVisitor = &NoOpKindVisitor{}
+
+func (*NoOpKindVisitor) VisitDaemonSet(kind GroupKindElement)             {}
+func (*NoOpKindVisitor) VisitDeployment(kind GroupKindElement)            {}
+func (*NoOpKindVisitor) VisitJob(kind GroupKindElement)                   {}
+func (*NoOpKindVisitor) VisitPod(kind GroupKindElement)                   {}
+func (*NoOpKindVisitor) VisitReplicaSet(kind GroupKindElement)            {}
+func (*NoOpKindVisitor) VisitReplicationController(kind GroupKindElement) {}
+func (*NoOpKindVisitor) VisitStatefulSet(kind GroupKindElement)           {}
+func (*NoOpKindVisitor) VisitCronJob(kind GroupKindElement)               {}

pkg/kinflate/apps/kind_visitor_test.go

@@ -0,0 +1,212 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package apps_test
+
+import (
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/kubectl/pkg/kinflate/apps"
+)
+
+var _ = Describe("When KindVisitor accepts a GroupKind", func() {
+
+	var visitor *TestKindVisitor
+
+	BeforeEach(func() {
+		visitor = &TestKindVisitor{map[string]int{}}
+	})
+
+	It("should Visit DaemonSet iff the Kind is a DaemonSet", func() {
+		kind := apps.GroupKindElement{
+			GroupKind: schema.GroupKind{
+				Kind:  "DaemonSet",
+				Group: "apps",
+			},
+		}
+		Expect(kind.Accept(visitor)).ShouldNot(HaveOccurred())
+		Expect(visitor.visits).To(Equal(map[string]int{
+			"DaemonSet": 1,
+		}))
+
+		kind = apps.GroupKindElement{
+			GroupKind: schema.GroupKind{
+				Kind:  "DaemonSet",
+				Group: "extensions",
+			},
+		}
+		Expect(kind.Accept(visitor)).ShouldNot(HaveOccurred())
+		Expect(visitor.visits).To(Equal(map[string]int{
+			"DaemonSet": 2,
+		}))
+	})
+
+	It("should Visit Deployment iff the Kind is a Deployment", func() {
+		kind := apps.GroupKindElement{
+			GroupKind: schema.GroupKind{
+				Kind:  "Deployment",
+				Group: "apps",
+			},
+		}
+		Expect(kind.Accept(visitor)).ShouldNot(HaveOccurred())
+		Expect(visitor.visits).To(Equal(map[string]int{
+			"Deployment": 1,
+		}))
+
+		kind = apps.GroupKindElement{
+			GroupKind: schema.GroupKind{
+				Kind:  "Deployment",
+				Group: "extensions",
+			},
+		}
+		Expect(kind.Accept(visitor)).ShouldNot(HaveOccurred())
+		Expect(visitor.visits).To(Equal(map[string]int{
+			"Deployment": 2,
+		}))
+	})
+
+	It("should Visit Job iff the Kind is a Job", func() {
+		kind := apps.GroupKindElement{
+			GroupKind: schema.GroupKind{
+				Kind:  "Job",
+				Group: "batch",
+			},
+		}
+		Expect(kind.Accept(visitor)).ShouldNot(HaveOccurred())
+		Expect(visitor.visits).To(Equal(map[string]int{
+			"Job": 1,
+		}))
+
+	})
+
+	It("should Visit Pod iff the Kind is a Pod", func() {
+		kind := apps.GroupKindElement{
+			GroupKind: schema.GroupKind{
+				Kind:  "Pod",
+				Group: "",
+			},
+		}
+		Expect(kind.Accept(visitor)).ShouldNot(HaveOccurred())
+		Expect(visitor.visits).To(Equal(map[string]int{
+			"Pod": 1,
+		}))
+
+		kind = apps.GroupKindElement{
+			GroupKind: schema.GroupKind{
+				Kind:  "Pod",
+				Group: "core",
+			},
+		}
+		Expect(kind.Accept(visitor)).ShouldNot(HaveOccurred())
+		Expect(visitor.visits).To(Equal(map[string]int{
+			"Pod": 2,
+		}))
+	})
+
+	It("should Visit ReplicationController iff the Kind is a ReplicationController", func() {
+		kind := apps.GroupKindElement{
+			GroupKind: schema.GroupKind{
+				Kind:  "ReplicationController",
+				Group: "",
+			},
+		}
+		Expect(kind.Accept(visitor)).ShouldNot(HaveOccurred())
+		Expect(visitor.visits).To(Equal(map[string]int{
+			"ReplicationController": 1,
+		}))
+
+		kind = apps.GroupKindElement{
+			GroupKind: schema.GroupKind{
+				Kind:  "ReplicationController",
+				Group: "core",
+			},
+		}
+		Expect(kind.Accept(visitor)).ShouldNot(HaveOccurred())
+		Expect(visitor.visits).To(Equal(map[string]int{
+			"ReplicationController": 2,
+		}))
+	})
+
+	It("should Visit ReplicaSet iff the Kind is a ReplicaSet", func() {
+		kind := apps.GroupKindElement{
+			GroupKind: schema.GroupKind{
+				Kind:  "ReplicaSet",
+				Group: "extensions",
+			},
+		}
+		Expect(kind.Accept(visitor)).ShouldNot(HaveOccurred())
+		Expect(visitor.visits).To(Equal(map[string]int{
+			"ReplicaSet": 1,
+		}))
+	})
+
+	It("should Visit StatefulSet iff the Kind is a StatefulSet", func() {
+		kind := apps.GroupKindElement{
+			GroupKind: schema.GroupKind{
+				Kind:  "StatefulSet",
+				Group: "apps",
+			},
+		}
+		Expect(kind.Accept(visitor)).ShouldNot(HaveOccurred())
+		Expect(visitor.visits).To(Equal(map[string]int{
+			"StatefulSet": 1,
+		}))
+	})
+
+	It("should Visit CronJob iff the Kind is a CronJob", func() {
+		kind := apps.GroupKindElement{
+			GroupKind: schema.GroupKind{
+				Kind:  "CronJob",
+				Group: "batch",
+			},
+		}
+		Expect(kind.Accept(visitor)).ShouldNot(HaveOccurred())
+		Expect(visitor.visits).To(Equal(map[string]int{
+			"CronJob": 1,
+		}))
+	})
+
+	It("should give an error if the Kind is unknown", func() {
+		kind := apps.GroupKindElement{
+			GroupKind: schema.GroupKind{
+				Kind:  "Unknown",
+				Group: "apps",
+			},
+		}
+		Expect(kind.Accept(visitor)).Should(HaveOccurred())
+		Expect(visitor.visits).To(Equal(map[string]int{}))
+	})
+})
+
+// TestKindVisitor increments a value each time a Visit method was called
+type TestKindVisitor struct {
+	visits map[string]int
+}
+
+var _ apps.KindVisitor = &TestKindVisitor{}
+
+func (t *TestKindVisitor) Visit(kind apps.GroupKindElement) { t.visits[kind.Kind] += 1 }
+
+func (t *TestKindVisitor) VisitDaemonSet(kind apps.GroupKindElement)             { t.Visit(kind) }
+func (t *TestKindVisitor) VisitDeployment(kind apps.GroupKindElement)            { t.Visit(kind) }
+func (t *TestKindVisitor) VisitJob(kind apps.GroupKindElement)                   { t.Visit(kind) }
+func (t *TestKindVisitor) VisitPod(kind apps.GroupKindElement)                   { t.Visit(kind) }
+func (t *TestKindVisitor) VisitReplicaSet(kind apps.GroupKindElement)            { t.Visit(kind) }
+func (t *TestKindVisitor) VisitReplicationController(kind apps.GroupKindElement) { t.Visit(kind) }
+func (t *TestKindVisitor) VisitStatefulSet(kind apps.GroupKindElement)           { t.Visit(kind) }
+func (t *TestKindVisitor) VisitCronJob(kind apps.GroupKindElement)               { t.Visit(kind) }